        * {
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
        }

        li {
            list-style: none;
        }

        /* body {
            height: 3000px;
        } */
        html,
        body {
            height: 100%;
            width: 100%;
        }

        body {
            background-image: url(../img/banner.jpg);
            background-size: cover;

            background-repeat: no-repeat;

            background-attachment: fixed;

            background-position: center;

        }

        .header {
            width: 1446.4px;
            height: 56px;
            margin: 0 auto;
            padding: 16px;
            background-color: yellow;
        }

        .header_nav li img {
            width: 15px;
            height: 16px;
        }

        .header_nav li {
            height: 24px;
            padding: 16px 16px 16px 14.4px;
        }

        .header .container {
            width: 1170px;
            height: 56px;
            background-color: green;
            padding: 0 15px;
            margin: 0 123.2px;
        }

        .container .header_left {
            color: white;
            float: left;
        }

        .container .header_nav {
            float: left;
        }

        .container .header_nav li {
            /* color: white; */
            float: left;
        }

        .container .header_left {
            width: 121.9px;
            height: 30.6px;
            padding: 1px 3.2px 0 0;
            line-height: inherit;
            padding: 12.7px 0;
        }

        .container .header_left h3 {
            line-height: 21.525px;
            height: 21.525px;
        }

        .container .header_right {
            float: right;
            height: 24px;
            padding: 16px 16px 16px 14.4px;
        }

        .container .header_right img {
            width: 15px;
            height: 16px;
        }

        /* 
        .header {
            position: fixed;
            top: 0;
            justify-content: center
        } */

        .banner {
            width: 100%
        }